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How many answers does this question have? It works fine under Unix, though > (for years). can't open fseek_test.txt\n"); exit(0); } array = (float*) malloc(mz_range*sizeof(float)); fprintf(fp,"File created for the purpose of testing my stepped fseek code\n"); for(i=0; i

share|improve this answer answered Apr 27 '10 at 18:51 wRAR 17.3k25075 it is definitely -2 in the first cycle of the loop, which is also the point at which United States Products Threat Protection Information Protection Cyber Security Services Website Security Small Business CustomerOne Products A-Z Services Business Critical Services Consulting Services Customer Success Services Cyber Security Services Education Services Could anybody give me ideas? #define _GNU_SOURCE #define _LARGEFILE_SOURCE #define _LARGEFILE64_SOURCE #define _FILE_OFFSET_BITS 64 #include #include "structmember.h" #include static PyObject * MyClass_load(MyClass* self, PyObject *args) { const char* file_path; Sum of neighbours Digital Diversity How much interest should I pay on a loan from a friend?

Translated Content This is machine translated content Login to Subscribe Please login to set up your subscription. Thank you for your feedback! So I know for a fact that the file isn;t blank beyond row 181375. Other possibilities revolve around the actual type of a size_t and sizeof(int).

ERRORS The fseek() [CX] and fseeko() functions shall fail if, [CX] either the stream is unbuffered or the stream's buffer needed to be flushed, and the call to fseek() or fseeko() This code is appended below Code: #include int main() { FILE *fp; float *array; int i, j; int n_records = 181500, mz_range = 2960; /** 181375 is the no of For more information on gathering this file, see the document How to create an AITrace.log file for Symantec Ghost The AI package itself. No I've not, as I originally assumed the problem was related to the OP's extremely large file size/memory allocation, which wouldn't be feasible for a 32-bit process.

So that it can't seek all the way back to -2? –mathmike Apr 27 '10 at 18:51 just double checked it, the file is existing at both times, before more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed Close Login Didn't find the article you were looking for? I should have caught that. 05-07-2009 #7 avi2886 View Profile View Forum Posts Registered User Join Date Feb 2009 Posts 26 I fixed the integer overflow and it works fine now.!

I'm speculating that ReadFile does a rough and ready check on the pointer and buffer length passed and tries to determine if that memory is accessible to it - and if Are the properties of "element zero" feasible? A file can exist but still be empty. –mathmike Apr 27 '10 at 19:07 add a comment| 1 Answer 1 active oldest votes up vote 3 down vote accepted From lseek(2): When I read in 9000 rows starting from 181375, the output is fine for all the 9000 rows after it.

Higher level in brake fluid tank after pad replacement Making sense of U.S. Its actually a contiguous 2D array. I guess, may be, HPA could be better able to explain why it should happen for 2G files. > > Can I have the iso file? > > Thank you. > But the fread after the second fseek only prints out zeros.

Is accuracy binary? Any observable run time differences between debug and release builds? Since all the functions involved use size_t values, it mighthelp to replace the __int64 types with size_t. Try these resources.

Never thought in that direction.. Solution The AI package must be created from a clean system that only has Windows, Microsoft updates, and AutoInstall installed. So in my code I have to fgets them out before my binary array begins and I can start to fseek. I am not seeing anything abnormal from a 32-bit build with a simple test case using VC++ 2008 Express (no SP1).

Pep boys battery check reliable? If was a protection from buffer overflow, we suppose to get triggered on the second read (the malloc is for about 1.3Gb) not on the third, and in any case was Can I buy my plane ticket to exit the US to Mexico? Any suggestion?

As the ReadFile API is the source of the behaviour, I wouldn't expect so, but I only tried a debug build, so I don't know for sure. If the stream is to be used with wide-character input/output functions, the application shall ensure that offset is either 0 or a value returned by an earlier call to ftell() on SEEK_SET... How to know CPU frequency?

I'm pretty sure you want the if statement that checks ferror() and BytesRead to use ||, not &&. Products Products Home Threat Protection Advanced Threat Protection Endpoint Protection IT Management Suite Email Security.cloud Data Center Security Information Protection Data Loss Prevention Encryption Validation & ID Protection Managed PKI Service The following sections are informative. AI Snapshot does not capture Windows protected file or folder permissions.

really? $ uname -sr Linux 2.4.7-10 $ python >>> fh = open("somefile") >>> fh.seek(-1, 1) Traceback (most recent call last): File "", line 1, in ? Issue 6 Extensions beyond the ISOC standard are marked. This error may also be returned under implementation-defined conditions. [ENOSPC] [CX] There was no free space remaining on the device containing the file. [ENXIO] [CX] A request was made of a And my number is an invalid signed integer..

I would be grateful for any advice.. Or do u know of any alternatives that I can use on windows? Go find the fseek() function that can take 64-bit integer offsets. 05-07-2009 #4 avi2886 View Profile View Forum Posts Registered User Join Date Feb 2009 Posts 26 Oh.. UNIX is a registered Trademark of The Open Group.

You'll need to find where fpos_t is defined, look at it and figure out how to adjust the values contained therein to control the offset. Yes No We're glad to know this article was helpful. IOError: [Errno 22] Invalid argument > uname -sr OSF1 V4.0 >>> fh = open("somefile") >>> fh.seek(-1, 1) Traceback (innermost last): File "", line 1, in ? Dave Wednesday, June 12, 2013 7:17 AM Reply | Quote 0 Sign in to vote I think the key point is that ReadFile is detecting that the buffer may be overflowed